People in China don’t often kiss or hug each other goodbyes or hellos, which ______ a common _______ in some European countries.
| A．are; practice | B．is; exercise | C．are; exercise | D．is; practice |
A good friend of mine from when I was born _______ at my home right before I left for Beijing．
| A．showing up | B．showed up | C．to show up | D．shows up |
．The factory I worked______ has been taken down and replaced by some buildings．
| A．in it | B．in which | C．in | D．in that |
Hurriedly, they packed their belonging and set off ______the direction of the river．
| A．for | B．to | C．at | D．in |
It’s hard for me to ______ him dancing the stomach dance in public!
| A．think | B．consider | C．imagine | D．treat |
He seemed______ to me at the party last month, but I can’t remember well now ．
| A．to introduce | B．to have introduced |
| C．to be introduced | D．to have been introduced |